Inside the World’s Largest Koi Collection

Published on September 1, 2026

World's Largest Koi Collection
Greenhouse No. 2 pond construction by Fitz’s Fish Ponds.

 Once in a lifetime, you meet someone who changes the way you look at life, at your work or simply at the way you enjoy something you love.

For me, one of those moments began in 2022. I arrived on a warm day at a remote property somewhere between Nashville and Memphis. After driving through a gate and crossing a flowing river, I came upon a pond site that was still very much under construction. But this was not a normal construction site. There were animals, concrete, heavy equipment and the unmistakable feeling that something much bigger was taking shape. Little did I know that this would be the beginning of a very special story.

Herbert Fritch’s Koi Facility

In the koi world, there are ponds, there are collections and then there are projects that grow into something much greater than anyone first imagined. Herbert Fritch’s koi facility is one of those projects. When I first visited Herbert in 2022, the site was still a dream in progress. Parts of the facility were unfinished, the vision was still evolving, and many of the ponds were either under construction or waiting to be filled with life.

Even then, one thing was clear. This was never going to be an ordinary private koi collection. It was being built with a level of passion, scale and dedication rarely seen outside Japan. Over the past few years, I have had the privilege of following this journey from the beginning. I have watched empty concrete ponds become fully functioning koi systems. I have seen ideas turn into infrastructure. I have watched the property grow from one impressive project into a much larger koi environment with multiple ponds, serious water volume, advanced filtration and a collection of Japanese koi that continues to develop year after year.

But what makes Herbert’s story so special is not only the size of the facility. It is the passion and purpose behind it.

Herbert is not simply building ponds to keep expensive fish. He is creating an environment where koi can truly develop. His focus has always been on giving the fish space, stability, water quality and time. Those are four things every serious koi keeper understands are essential, but very few are able to provide at this scale.

A Private Facility With a Professional Mindset

During construction of the first pond, Herb’s koi were temporarily housed in a freshwater spring
on the property.

The latest evolution of the facility shows just how far the project has come. What began as a personal passion has developed into one of the most remarkable private koi facilities I have ever filmed.

The ponds are no longer simply individual systems. Together, they form a carefully planned environment designed around long-term koi health and development.

Large volumes of water create stability. Strong filtration helps keep the water clean and consistent. The layout allows Herbert to separate koi by size, quality, purpose and future potential.

That is especially important when keeping high-value Japanese koi because their development is never static.

A koi changes with every season. Its body grows. Skin quality may improve or decline. Patterns stretch as the fish matures, and the overall balance of the koi can change dramatically over time.

A facility like this gives Herbert the ability to manage that development properly. For many hobbyists, one pond is the final dream. For Herbert, one pond was only the beginning. And, let’s be honest, the result is mind-blowing.

Inspired by Japan

New ponds framed by the impressive windows of Greenhouse No. 3

Anyone who knows Herbert understands that his passion for koi goes far beyond the fish themselves.

He has a deep respect for Japanese koi culture, Japanese garden design and the way serious breeders in Japan approach water quality, patience and selection. That influence is visible throughout the facility.

The ponds are not just functional. They are part of a larger atmosphere. The water, landscaping, Japanese-inspired details and the way the koi are presented all contribute to the feeling that this is not merely a place to keep fish.

It is a place to experience them. This is something I have seen many times in Japan. The best koi environments are not only about technology. They are about balance.

The technical side must be correct, but the emotional side matters, too.

A koi pond should invite you to slow down. It should make you observe. It should make you appreciate the fish not only as animals, but as living art. Herbert understands that deeply.

Water Quality is Everything

For POND Trade magazine readers, one of the most interesting aspects of the facility is the technical and visionary thinking behind it. At this level, water quality is everything. Large koi create a serious biological load. Feeding high-quality koi for growth often means feeding heavily, and heavy feeding requires powerful mechanical and biological filtration. The system must remove waste efficiently, maintain stable water parameters and keep oxygen levels high.

This is where the project becomes relevant not only to koi collectors, but also to pond builders, retailers and filtration professionals.

Herbert’s facility demonstrates what happens when koi keeping is approached with a professional mindset. The ponds are designed around the needs of the fish first. Water volume, turnover, filtration capacity, ease of maintenance and long-term stability are all part of the larger plan. In many backyard ponds, the pond is designed first and the koi are added later.

In Herbert’s case, the koi are the starting point. Everything else is built around them. That is an important lesson for the industry and for any hobbyist just getting started.

From Collector to Contributor

First water added to the pond, circa 2022.

Another part of Herbert’s story that deserves attention is his role in supporting the wider koi community. He is known as a serious collector, but he is also someone who supports the industry around him. He purchases koi from different dealers, follows developments within the American koi community and has shown a willingness to promote the hobby beyond his own facility.

That matters.

It makes Herbert an important contributor to the industry not only in the United States, but also on a much broader level. The koi industry needs passionate hobbyists, but it also needs people willing to invest in the future of the hobby. Large private facilities like this create attention. They inspire new hobbyists. They show what is possible when koi keeping is taken seriously. They also help dealers, breeders, pond builders, filtration companies and content creators tell a larger story about the value of high-quality koi keeping.

For me as a content creator, Herbert’s support has been a dream. It has given me the opportunity to share this industry with more people and show what can be achieved when passion, education and investment come together. That is one of the main reasons I wanted to document Herbert’s projects from the beginning. This is not just another pond tour. It is a story about what passion can become when someone is willing to build patiently, learn constantly and continue improving.

And yes, Herbert is simply a great person to be around.

A Living Project, Just Like the Koi

The main pond inside the botanical greenhouse, also the first pond constructed on the property.

One of the most exciting things about Herbert’s facility is that it still feels alive as a project. It is not “finished” in the sense that nothing else can be added or improved. Quite the opposite.

Every update reveals new progress, new ideas and another level of refinement. That is also what makes following the project so interesting. Koi keeping at this scale is never truly finished.

The fish grow. The ponds mature. Filtration evolves. The collection changes.New koi arrive. Others develop. Sometimes the entire direction of a pond changes based on the potential of the fish within it. That is the beauty of koi.

A koi pond is not like a swimming pool or a completed landscape feature. It is a living system. It changes with the seasons, with the fish and with the keeper. Herbert’s facility captures that perfectly.

More recently, Herbert has brought in highly respected people from within the koi industry to help refine both his collection and his knowledge. That becomes increasingly important when managing a collection of this size and quality.

I am also proud to say that, together with our channel partner Fitz’s Fish Ponds, we have been able to source some very special koi for Herbert’s collection. It has been a great journey so far.

What the Industry Can Learn

An aerial overview of Herb’s expansive koi grounds.

For pond professionals, Herbert’s facility offers a glimpse into where the high-end koi market is heading. Today’s serious koi keepers are looking for more than a hole in the ground filled with water. They want systems that are reliable, efficient and designed for the long term.

They want filtration that can handle future growth. They want water clarity, but they also want biological stability. They want ponds that are beautiful, but practical to maintain.

Most importantly, they want results.

A facility like Herbert’s demonstrates the difference between simply keeping koi and truly developing them. The pond industry should pay attention to that distinction because it represents a significant opportunity for the future. Better pond design can lead to better koi health. Better filtration can support better growth. Better planning can prevent problems before they begin. And better education can help hobbyists understand why these details matter before costly mistakes are made.

That is why projects like this are so valuable. They demonstrate the highest levels of the hobby, but the lessons apply to almost every serious koi pond.

More Than a Collection

Herb (on right) at Nashville’s Bridgestone Arena following the inaugural Nashville Koi Show in 2026.

When I look back at the first footage I filmed in 2022 and compare it with the latest update, the transformation is incredible.

What was once a construction site has become a world-class koi environment.

The ponds are full of life. The systems are running. The koi are developing. And the original vision becomes more visible with every visit.

But beyond the concrete, filtration and water volume, the real story is passion.Herbert’s facility is not impressive only because of its size. It is impressive because it was built with purpose.

It represents years of dedication, a deep love for Japanese koi and a commitment to creating the best possible environment for the fish.

For me, as someone who has followed this journey from the beginning, that is what makes the project so special.

It is not just a koi facility. It is a legacy in the making.

About the Author

Yvo de Wal is known as “The Koi Partner,” a koi enthusiast and documentarian who travels Japan filming the hidden world of koi breeding. Follow his journey on YouTube and Instagram (@thekoipartner) to experience the beauty and craft of koi like never before.

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